Once opened, the travel time for high-speed traffic between Stuttgart and Ulm will be only 28 minutes rather than the current 54 minutes, if a stop at Stuttgart Airport is omitted. This is part of Deutsche Bahn's Netz 21 concept, which envisages a reduction of the travel time between Frankfurt and Munich from over three and a half today to two and a half hours in the future. However, this timing can only be achieved with a by-pass of Mannheim on the proposed Rhine/Main–Rhine/Neckar high-speed rail line, which would allow the travel time between Frankfurt and Stuttgart to be reduced to one hour. Deutsche Bahn has shelved the proposed bypass because of opposition to it in Mannheim. 27.1 km of the 58 km new line run in seven twin-tube tunnels. The estimated construction cost of € 2 billion, is affected by the difficult geology that the tunnels will run through.
Sections
The project is divided into seven planning sections:
Section 2.1 a/b connects Wendlingen with section 1.4 of the Stuttgart 21 project.
Section 2.1 c runs parallel with the A8, including the 8.3 km-long Albvorland tunnel.
Section 2.2 consists mainly of the approximately 8.8 km for the Bossler tunnel, two approximately 480 m-long bridges over the Fils valley and the approximately 4.8 km-long Steinbühl tunnel.
Section 2.3 runs above ground and parallel to the A8.
Section 2.4 runs through a tunnel into the city of Ulm.
The integration of the line with Ulm station is carried out in Section 2.5 a1.
Finally Section 2.5 a2 connects to the Neu-Ulm 21 project.
Construction timetable
In May 2005 it was decided to commence construction. Under the plans of DB ProjektBau, if construction had commenced in autumn 2005, it would have been ready to open in 2013. However, as a result of Federal Budget cuts commencement of construction has been delayed. On July 19, 2007, it was announced by the Federal Government, the State of Baden-Württemberg and DB that the project had been officially approved. € 2.0 billion will be invested in the Wendlingen-Ulm high-speed line, along with € 2.8 billion in Stuttgart 21. Baden-Württemberg agreed to provide funds of € 950 million for the Wendlingen-Ulm line, but the Federal Government will not provide funding for it before 2016. Preparatory construction work for the new line began in the autumn of 2010. The ground-breaking ceremony was held on 7 May 2012. Work has commenced on most sections. All structures on the line will be completed by 2018. As of April 2020, the line is expected to open in December 2022, before Stuttgart 21, which is expected to open in December 2025.